libexec/rtld-elf/Makefile

   1 # $FreeBSD$
   2
   3 # Use the following command to build local debug version of dynamic
   4 # linker:
   5 # make DEBUG_FLAGS=-g WITHOUT_TESTS=yes all
   6
   7 RTLD_ELF_DIR:=  ${.PARSEDIR}
   8
   9 .include <src.opts.mk>
  10 PACKAGE=        clibs
  11 MK_PIE=         no # Always position independent using local rules
  12 # Not compatible with sanitizer instrumentation or SSP.
  13 MK_ASAN=        no
  14 MK_SSP=         no
  15 MK_UBSAN=       no
  16
  17 .if !defined(NEED_COMPAT)
  18 CONFS=          libmap.conf
  19 .endif
  20 PROG?=          ld-elf.so.1
  21 .if (${PROG:M*ld-elf32*} != "")
  22 TAGS+=          lib32
  23 .endif
  24 SRCS= \
  25         crtbrand.S \
  26         rtld_start.S \
  27         reloc.c \
  28         rtld.c \
  29         rtld_lock.c \
  30         rtld_malloc.c \
  31         rtld_printf.c \
  32         map_object.c \
  33         xmalloc.c \
  34         debug.c \
  35         libmap.c
  36 MAN?=           rtld.1
  37 ACFLAGS+=       -DLOCORE
  38 CFLAGS+=        -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding
  39 CFLAGS+=        -I${SRCTOP}/lib/csu/common
  40 .if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
  41 RTLD_ARCH=      ${MACHINE_ARCH:S/powerpc64le/powerpc64/}
  42 .else
  43 RTLD_ARCH=      ${MACHINE_CPUARCH}
  44 .endif
  45 CFLAGS+=        -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR}
  46
  47 NO_WCAST_ALIGN= yes
  48 INSTALLFLAGS=   -C -b
  49 PRECIOUSPROG=
  50 BINDIR=         /libexec
  51 SYMLINKS=       ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG}
  52 MLINKS?=        rtld.1 ld-elf.so.1.1 \
  53                 rtld.1 ld.so.1
  54
  55 CFLAGS+=        -fpic -DPIC $(DEBUG)
  56
  57 LDFLAGS+=       -shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY}
  58 # Pull in the dependencies that we use from libc
  59 .include "rtld-libc/Makefile.inc"
  60 .if ${MK_TOOLCHAIN} == "no"
  61 LDFLAGS+=       -L${LIBCDIR}
  62 .endif
  63
  64 VERSION_DEF=    ${LIBCSRCDIR}/Versions.def
  65 SYMBOL_MAPS=    ${RTLD_ELF_DIR}/Symbol.map
  66 VERSION_MAP=    Version.map
  67 LDFLAGS+=       -Wl,--version-script=${VERSION_MAP}
  68
  69 .if exists(${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map)
  70 SYMBOL_MAPS+=   ${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map
  71 .endif
  72
  73 .sinclude "${RTLD_ELF_DIR}/${RTLD_ARCH}/Makefile.inc"
  74 RTLD_ENTRY?=    .rtld_start
  75
  76 # Since moving rtld-elf to /libexec, we need to create a symlink.
  77 # Fixup the existing binary that's there so we can symlink over it.
  78 beforeinstall:
  79 .if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no"
  80         -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG}
  81 .endif
  82
  83 .PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH} ${SRCTOP}/lib/csu/common
  84
  85 .if ${.CURDIR} == ${RTLD_ELF_DIR}
  86 HAS_TESTS=
  87 SUBDIR.${MK_TESTS}+= tests
  88 .endif
  89
  90 # Some of the required math functions (div & mod) are implemented in
  91 # libcompiler_rt on some architectures.
  92 LIBADD+=        compiler_rt
  93
  94 .include <bsd.prog.mk>
  95 ${PROG_FULL}:   ${VERSION_MAP}
  96 .include <bsd.symver.mk>
  97
  98 .if ${COMPILER_TYPE} == "gcc"
  99 # GCC warns about redeclarations even though they have __exported
 100 # and are therefore not identical to the ones from the system headers.
 101 CFLAGS+=        -Wno-redundant-decls
 102 .endif